sample data is like
@ID_111_I1_0.000_I2_0.00_I3_-0.999*
@ID_232_TS_09.0*
I created one regular expression like :
const reg = new RegExp(/^@ID_[A-Z0-9._-]*\*/i);
but this will show valid true for strings like @ID_111_I1_0.000_I2*
here I2 key is there, but its value is not showing
string start with this @ID . then split with _ key value pair and string end with *
Please help me with a solution !!!!
Check if the following works for you:
^@ID_\d+(?:_[A-Z\d]+_-?\d+(?:\.\d+)?)+\*$
See the online demo
^ -Start string anchor.@ID_ - Match literally what is mentioned.\d+ - 1+ numbers 0-9 to get the ID#.(?: - Open 1st non-capture group:
_[A-Z\d]+ - An underscore followed by 1+ alphanumeric characters._-?\d+ - An underscore, optional hyphen and 1+ digits.(?: - Open 2nd non-capture group:
\.\d+ - A literal dot and 1+ numbers.)? - Close 2nd non-capture group and make it optional.)+ - Close 1st non-capture group and match it 1+ times.\* - Literal asterisk.$ - End string anchor.Note that I made it optional to have decimals in the key-value pairs. You could make it obligatory if need be:
^@ID_\d+(?:_[A-Z\d]+_-?\d+\.\d+)+\*$
@ID_111_I1_0.000_I2*?/^@ID_[A-Z0-9.-]+(?:_[A-Z0-9]+_[A-Z0-9.-]+)*\*$/